One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,7)(5,8)(10,13)(11,15)(17,18)(19,27)(20,25)(21,24)(22,26)(23,30)(28,36)(29,40)(31,42)(32,37)(33,38)(34,41)(35,39)(43,46)(44,48)(45,47) involution — undirected(1,3,6,2)(4,8,5,7)(9,10,12,13)(11,14,15,16)(17,19)(18,23)(20,32)(21,30)(22,28)(24,27)(25,40)(26,42)(29,33)(31,35)(34,44)(36,39)(37,38)(41,46)(43,45)(47,48)(1,4,6,5)(2,7,3,8)(9,11,12,15)(10,14,13,16)(18,24)(19,28)(22,35)(23,36)(25,38)(27,42)(29,43)(30,31)(32,44)(34,45)(37,46)(40,48)(2,3)(7,8)(10,13)(14,16)(17,20)(18,25)(19,29)(21,33)(22,34)(23,37)(24,38)(26,41)(27,40)(28,43)(30,32)(31,44)(35,45)(36,46)(39,47)(42,48) involution — undirected(1,5,6,4)(2,8,3,7)(20,33)(25,38)(29,32)(34,45)(37,40)(41,47)(43,44)(46,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.